Underground softened water dust removal device

Abstract

Belonging to the technical field of mine water treatment, the invention relates to an underground softened water dust removal device, which comprises a pretreatment assembly, a membrane filtration assembly, a softened water storage tank, a pressure regulating pump and a spray assembly. The pretreatment assembly is used for primarily filtering mine water so as to remove suspended solids and large particles; the membrane filtration assembly is formed by connecting ultrafiltration membranes in parallel and is used for further softening the pretreated mine water; the softened water storage tank is used for storing softened mine water; the softened water storage pool provides a water source for the nozzle through the spraying assembly, the spraying assembly is telescopic and rotatable, and the temperature and pressure of softened mine water sprayed by the nozzle can be changed according to working conditions. The device disclosed by the invention has the advantages of short treatment flow and high efficiency, is not influenced by topographic factors, is relatively good in universality and is convenient to popularize and apply.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine production, in particular to the treatment of mine water, in particular to an underground softened water dust removal device. Background Art

[0002] Coal mines are an important resource in my country. my country's coal resources are concentrated in the western and northern regions, but these areas are dry and rainy all year round, resulting in a shortage of water resources. Therefore, the rational use of water resources is extremely important. A large amount of mine water will be generated during the mining process. The generation of mine water is due to the destruction of the water rock layer during coal excavation, which causes groundwater to flow into the coal mine tunnels along the cracks in the rock layer. In this process, a large amount of coal powder, emulsion, mineral oil, engine oil and other substances will be mixed in. If they are directly discharged to the outside world, it will not only cause a waste of water resources, but also pollute the environment. Therefore, the rational use of mine water resources is of great significance to alleviating the shortage of water resources in the mining area and improving the utilization rate of mine water resources.

[0003] A large amount of dust is generated during mining and coal transportation. Dust can enter the human body through the respiratory tract, skin, eyes, etc., affecting the health of personnel. We can use a spray dust reduction system to use atomized water to adsorb and wrap the suspended dust to reduce the concentration of dust in the air. At present, the dust reduction device in the mine is mainly controlled by the control box, which is inconvenient and prone to failure. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and provide an underground softened water dust removal device. The device can not only purify the mine water, but also the treated mine water can be directly used for spray dust reduction, which greatly improves the dust reduction effect and rate.

[0005] The present invention is achieved through the following technical solutions: An underground softened water dust removal device comprises a mine water softening zone system and a dust removal zone system.

[0006] The mine water softening zone system includes a pretreatment component and a membrane filtration component; the pretreatment component is mainly composed of a filter screen, activated carbon and quartz sand connected in series in sequence, and the membrane filtration component is composed of 4-6 groups of ultrafiltration membranes connected in parallel. The outlet end of the pretreatment component is connected to the inlet end of the membrane filtration component.

[0007] The dust removal area system includes a softened water storage tank, a pressure regulating pump and a spray assembly; the inlet end of the softened water storage tank is connected to the outlet end of the membrane filtration assembly; the inlet end of the pressure regulating pump is connected to the outlet end of the softened water storage tank; the spray assembly includes a main water pipe, the inlet end of the main water pipe is connected to the outlet end of the pressure regulating pump, the main water pipe is provided with multiple outlet ends, each outlet end is connected to a spray pipe, and each spray pipe is connected to a nozzle.

[0008] As a preferred technical solution, the device of the present invention also includes a control system; the control system includes a main controller, a sensing component, a rotating component, a telescopic component and a temperature control component; the sensing component includes a temperature sensor, a dust concentration sensor and an infrared sensor, and the temperature sensor, the dust concentration sensor and the infrared sensor are all connected to the main controller; the rotating component, the telescopic component and the temperature control component are all arranged between the pressure regulating pump and the spray component, and the rotating component, the telescopic component and the temperature control component are all connected to the main controller; the pressure regulating pump is connected to the main controller.

[0009] As a preferred technical solution, the pretreatment component also includes a sedimentation tank, a water level sensor, a cleaning tool and a controller. The sedimentation tank is arranged immediately below the filter, the water level sensor is arranged above the front end of the filter, the cleaning tool is arranged immediately above the filter, and the water level sensor and the cleaning tool are both connected to the controller.

[0010] As a preferred technical solution, the rotating component controls the spray component to rotate at an angle of 0°-180°.

[0011] As a preferred technical solution, the telescopic component controls the telescopic length of the spray component to be 50cm-100cm.

[0012] As a preferred technical solution, the temperature regulating component controls the temperature of the softened water to 20°C-60°C.

[0013] As a preferred technical solution, the pressure regulating pump controls the pressure of softened water entering the spray assembly to be 8MPa-10MPa.

[0014] As a preferred technical solution, four spray pipes are provided in the spray assembly, the middle of each spray pipe is connected to the main water pipe, and both ends of each spray pipe are connected to a nozzle.

[0015] As a preferred technical solution, the diameters of the nozzles on the four spray pipes are 1.0 mm, 1.2 mm, 1.5 mm, and 2 mm, respectively.

[0016] In the device of the present invention, the pretreatment component is used for primary filtration of mine water to remove suspended matter and larger particles; the membrane filtration component is composed of ultrafiltration membranes in parallel, and is used to further soften the pretreated mine water; the softened water storage tank is used to store softened mine water; the softened water storage tank provides a water source for the nozzle through a spray component, wherein the spray component is retractable and rotatable, and the softened mine water sprayed from the nozzle will also change temperature and pressure according to working conditions.

[0017] Compared with the prior art, the beneficial effects of the device of the present invention are as follows: 1) The device of the present invention uses common underground mine water as a dust reduction water source, which greatly improves the effective utilization rate of underground water resources (such as old empty area mine water), reduces the time and cost of transporting water from the ground to the underground, and greatly reduces the occurrence of mine flood accidents.

[0018] 2) The device of the present invention is equipped with a control system, which includes a main controller and a sensor component, a rotating component, a telescopic component, a temperature control component, and a pressure regulating pump connected to the main controller; wherein the sensor component includes a temperature detector, a dust concentration detector, and an infrared detector, which can detect the external temperature, the external dust concentration, and whether there are people or obstacles in front of it; the rotating component and the telescopic component can adjust the spraying angle and the spraying length range of the spraying component to be suitable for dust reduction operations under different conditions, reducing the complexity and danger caused by moving equipment; the temperature control component can adjust the temperature of the softened water sprayed from the nozzle, and the pressure regulating pump can adjust the water outlet pressure.

[0019] In summary, the device of the present invention has the advantages of short processing flow and high efficiency, is not affected by terrain factors, has good universality, and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the pretreatment component in the device of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the dust removal zone system in the device of the present invention.

[0024] Figure 4 It is a structural block diagram of the control system in the device of the present invention.

[0025] In the figure: 1. water level sensor; 2. cleaning tool; 11. pretreatment component; 110. sedimentation tank; 111. filter screen; 112. activated carbon; 113. quartz sand; 12. membrane filtration component; 13. sensor component; 21. softened water storage tank; 22. pressure regulating pump; 23. spray pipe; 24. first nozzle; 25. second nozzle; 26. third nozzle; 27. fourth nozzle; 28. rotating component; 29. ​​temperature control component; 30. telescopic component; 31. main water pipe. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms “first”, “second”, “third” and “fourth” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figures 1 to 4 As shown, this embodiment provides an underground softened water dust removal device, including a mine water softening zone system, a dust removal zone system and a control system.

[0031] The mine water softening zone system includes a pretreatment component 11 and a membrane filtration component 12. The pretreatment component 11 belongs to the first part of the underground softened water dust removal device, which includes a filter screen 111, activated carbon 112, quartz sand 113, a sedimentation tank 110, a water level sensor 1, a cleaning tool 2 and a controller. The filter screen 111, activated carbon 112 and quartz sand 113 are connected in series in sequence, the sedimentation tank 110 is arranged immediately below the filter screen, the water level sensor 1 is arranged above the front end of the filter screen, the cleaning tool 2 is arranged immediately above the filter screen, and the water level sensor 1 and the cleaning tool 2 are both connected to the controller; the inlet end of the pretreatment component 11 is connected to the coal mine water supply system through a pipeline connection. When the filter screen 111 is blocked due to excessive impurities, the water level at its front end will rise and trigger the water level sensor 1. After receiving the signal, the water level sensor 1 sends it to the controller. The controller controls the cleaning tool 2 to extend and clean the impurities on the filter screen 111. The cleaned impurities fall into the sedimentation tank 110, so that the pretreatment component can operate normally. The inlet end of the membrane filtration component 12 is connected to the outlet end of the pretreatment component 11 through a pipeline, and the interior of the membrane filtration component 12 is composed of 4 to 6 groups of ultrafiltration membranes connected in parallel.

[0032] The pretreatment component also includes a sedimentation tank 110, a water level sensor 1, a cleaning tool 2 and a controller. The sedimentation tank 110 is arranged immediately below the filter screen, the water level sensor 1 is arranged above the front end of the filter screen, the cleaning tool 2 is arranged immediately above the filter screen, and both the water level sensor 1 and the cleaning tool 2 are connected to the controller.

[0033] The dust removal area system includes a softened water storage tank 21, a pressure regulating pump 22 and a spray assembly. The inlet end of the softened water storage tank 21 is connected to the outlet end of the membrane filtration assembly 12 through a pipeline; the softened water storage tank 21 is located in the first part of the dust removal area system, and the softened water storage tank 21 is used to store the mine water softened by the mine water softening area system. The inlet end of the pressure regulating pump 22 is connected to the outlet end of the softened water storage tank 21 through a pipeline; the pressure regulating pump 22 is a water-powered pressure regulating pump 22, which relies on water pressure to provide power for the dust removal area system and can change the pressure of the spray sprayed from the nozzle. The spray assembly includes a main water pipe 31, the inlet end of the main water pipe 31 is connected to the outlet end of the pressure regulating pump 22, and four outlet ends are arranged on the main water pipe 31, each outlet end is connected to a spray pipe 23, the spray pipe 23 is made of flexible material, the middle part of each spray pipe 23 is connected to the main water pipe 31, and each end of each spray pipe 23 is connected to a nozzle; specifically: the two ends of the first spray pipe 23 are respectively connected to a first nozzle 24, and the diameter of the first nozzle 24 is 1.0 mm; the two ends of the second spray pipe 23 are respectively connected to a second nozzle 25, and the diameter of the second nozzle 25 is 1.2 mm; the two ends of the third spray pipe 23 are respectively connected to a third nozzle 26, and the diameter of the third nozzle 26 is 1.5 mm; the two ends of the fourth spray pipe 23 are respectively connected to a fourth nozzle 27, and the diameter of the fourth nozzle 27 is 2.0 mm.

[0034] The control system includes a main controller, a sensor assembly 13, a rotating assembly 28, a telescopic assembly 30 and a temperature control assembly 29. The main controller controls the sensor assembly 13, the rotating assembly 28, the telescopic assembly 30, the temperature control assembly 29 and the pressure regulating pump 22, is connected to the sensor assembly 13, the rotating assembly 28, the telescopic assembly 30, the temperature control assembly 29 and the pressure regulating pump 22 through lines, and has a display screen to display various parameters. The sensor assembly 13 includes a temperature sensor, a dust concentration sensor and an infrared sensor, which are all connected to the main controller, and can detect the external temperature, the external dust concentration and whether there are people or obstacles in front of it. The rotating assembly 28, the telescopic assembly 30 and the temperature regulating assembly 29 are all arranged between the pressure regulating pump 22 and the spray assembly, and the rotating assembly 28, the telescopic assembly 30 and the temperature regulating assembly 29 are all connected to the main controller; wherein, the spray assembly can be controlled to rotate by the rotating assembly 28, and the rotation angle thereof is controlled to be 0°-180°; the spray assembly can be controlled to telescope by the telescopic assembly 30, and the telescopic length of the controller is 50cm-100cm; the temperature of the softened water can be controlled by the temperature regulating assembly 29, and the temperature of the softened water is controlled to be 20℃-60℃. The pressure regulating pump 22 is connected to the main controller, and the pressure of the softened water sprayed from the spray assembly can be controlled by the pressure regulating pump 22, and the pressure of the softened water is controlled to be 8MPa-10MPa.

[0035] The specific working principle of each component in the underground softened water dust removal device described in this embodiment is as follows: The mine water is pretreated in the pretreatment component 11, and the pretreatment process is as follows: the mine water enters the pretreatment component 11 which is composed of a filter screen 111, activated carbon 112 and quartz sand 113 connected in series in sequence to remove suspended solids with larger diameters and reduce the filtration pressure of the membrane filtration component 12; the membrane filtration component 12 is composed of 4-6 groups of ultrafiltration membranes in parallel, and the membrane filtration component 12 is connected to the pretreatment component 1 through a pipeline to further soften the pretreated mine water. The softened water storage tank 21 is connected to the membrane filtration component 12 through a pipeline to store softened mine water.

[0036] A sensor component 13 is installed on the top of the mine water softening zone system. The sensor component 13 includes a temperature sensor, a dust concentration sensor and an infrared sensor. It can detect the external temperature, external dust concentration and whether there are people or obstacles in front of it, and can provide environment-related data for the control system.

[0037] The softened water storage tank 21 controls the water outlet pressure through the pressure regulating pump 22, the initial pressure is 8MPa, and the maximum pressure can reach 10MPa.

[0038] The dust removal area system mainly uses eight nozzles on the spray pipe 23 to spray dust. It can also adjust the angle, water outlet temperature, water outlet pressure and telescopic length of the spray pipe 23 through the rotating component 28, the temperature regulating component 29, the pressure regulating pump 22 and the telescopic component 30 according to different situations.

[0039] There are two nozzles on each side of the spray pipe 23, with a total of 4 branch spray pipes 23, among which the first nozzle 24 has a diameter of 1.0 mm, the second nozzle 25 has a diameter of 1.2 mm, the third nozzle 26 has a diameter of 1.5 mm, and the fourth nozzle 27 has a diameter of 2.0 mm, which are used to cope with different working conditions underground and improve the efficiency of spray dust reduction.

[0040] The sprayed softened mine water spray can be temperature-regulated by the temperature regulating component 29, with the initial temperature set at 20°C and the maximum temperature set at 60°C.

[0041] The spray pipe 23 contains a telescopic component 30 made of flexible material, with an initial length of 50 cm. The telescopic component 30 can be extended to a maximum length of 100 cm; the rotating component 28 can change the angle of the spray pipe, with an initial angle of 0° and a maximum angle of 180°, so as to cope with the complex working conditions of underground spray dust reduction.

[0042] The main controller adjusts the rotating assembly 28, the temperature regulating assembly 29, the pressure regulating pump 22, and the telescopic assembly 30 according to the ambient temperature, dust concentration, and the presence or absence of obstacles ahead provided by the sensor assembly 13 to cope with complex working conditions underground.

[0043] After the sensor component 13 has been working for 2 hours, it detects that the dust concentration in the underground environment has decreased by less than 10% compared with the initial value. The main controller will control the pressure regulating pump 22 to increase the water outlet pressure by 0.5MPa to increase the spray dust reduction rate. If the sensor component 13 still detects that the dust concentration in the underground environment is still higher than the preset value after working for another 2 hours, the main controller will repeat the above three operations. If the dust reduction rate is still low, an alarm will be issued to remind the staff to carry out maintenance.

[0044] When the sensor component 13 detects that the dust concentration in the underground environment has decreased by less than 10% compared with the initial value after working for 2 hours, the main controller will control the rotating component 28 to rotate 30° to increase the spray dust reduction rate; if the sensor component 13 still detects that the dust concentration in the underground environment is still higher than the preset value after working for another 2 hours, the main controller will repeat the above operation.

[0045] When the sensor component 13 detects that the dust concentration in the underground environment has decreased by less than 10% compared with the initial value after working for 2 hours, the main controller will control the temperature control component 29 to increase the water outlet temperature by 5°C to increase the spray dust reduction rate; if the sensor component 13 still detects that the dust concentration in the underground environment is still higher than the preset value after working for another 2 hours, the main controller will repeat the above operation.

[0046] When the sensor component 13 detects that the dust concentration in the underground environment has decreased by less than 10% compared with the initial value after working for 2 hours, the main controller will control the telescopic component 30 to extend by 5 cm to increase the spray dust reduction rate; if the sensor component 13 still detects that the dust concentration in the underground environment is still higher than the preset value after working for another 2 hours, the main controller will repeat the above operation.

[0047] Through the actual use of the device of the present invention in the mine, the dust reduction efficiency of total dust and respirable dust in four parts such as coal mining machine and downwind side has reached more than 89%. Therefore, it is estimated that the removal rate of total dust and respirable dust of the device of the present invention is 80%-85%, which greatly improves the working environment of the working face.

[0048] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. An underground softened water dust removal device, characterized in that: Including mine water softening area system and dust removal area system; The mine water softening zone system includes a pretreatment component and a membrane filtration component; the pretreatment component is mainly composed of a filter screen, activated carbon and quartz sand connected in series, and the membrane filtration component is composed of 4-6 groups of ultrafiltration membranes connected in parallel, and the outlet end of the pretreatment component is connected to the inlet end of the membrane filtration component; The dust removal area system includes a softened water storage tank, a pressure regulating pump and a spray assembly; the inlet end of the softened water storage tank is connected to the outlet end of the membrane filtration assembly; the inlet end of the pressure regulating pump is connected to the outlet end of the softened water storage tank; the spray assembly includes a main water pipe, the inlet end of the main water pipe is connected to the outlet end of the pressure regulating pump, the main water pipe is provided with multiple outlet ends, each outlet end is connected to a spray pipe, and each spray pipe is connected to a nozzle.

2. The underground softened water dust removal device according to claim 1, characterized in that: It also includes a control system; the control system includes a main controller, a sensor component, a rotating component, a telescopic component and a temperature control component; the sensor component includes a temperature sensor, a dust concentration sensor and an infrared sensor, and the temperature sensor, the dust concentration sensor and the infrared sensor are all connected to the main controller; the rotating component, the telescopic component and the temperature control component are all arranged between the pressure regulating pump and the spray component, and the rotating component, the telescopic component and the temperature control component are all connected to the main controller; the pressure regulating pump is connected to the main controller.

3. The underground softened water dust removal device according to claim 2 is characterized in that: The pretreatment component also includes a sedimentation tank, a water level sensor, a cleaning tool and a controller. The sedimentation tank is set just below the filter, the water level sensor is set above the front end of the filter, the cleaning tool is set just next to the filter, and the water level sensor and the cleaning tool are both connected to the controller.

4. The underground softened water dust removal device according to claim 2, characterized in that: The rotating component controls the rotation angle of the spray component to be 0°-180°.

5. The underground softened water dust removal device according to claim 2, characterized in that: The telescopic component controls the telescopic length of the spray component to be 50cm-100cm.

6. The underground softened water dust removal device according to claim 2, characterized in that: The temperature regulating component controls the temperature of the softened water to 20℃-60℃.

7. The underground softened water dust removal device according to claim 2, characterized in that: The pressure regulating pump controls the pressure of softened water entering the spray assembly to 8MPa-10MPa.

8. The underground softened water dust removal device according to claim 2, characterized in that: Four spray pipes are arranged in the spray assembly, the middle part of each spray pipe is connected to the main water pipe, and both ends of each spray pipe are respectively connected to a nozzle.

9. The underground softened water dust removal device according to claim 8, characterized in that: The diameters of the nozzles on the four spray pipes are 1.0mm, 1.2mm, 1.5mm, and 2mm respectively.

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